code: def _load_tristan_coil_locs(coil_loc_path):
      """Load the Coil locations from Tristan CAD drawings."""
      channel_info = dict()
      with open(coil_loc_path) as fid:
          # skip 2 Header lines
          fid.readline()
          fid.readline()
          for line in fid:
              line = line.strip()
              vals = line.split(",")
              channel_info[vals[0]] = dict()
              if vals[6]:
                  channel_info[vals[0]]["inner_coil"] = np.array(
                      vals[2:5], np.float64
                  )
                  channel_info[vals[0]]["outer_coil"] = np.array(
                      vals[5:8], np.float64
                  )
              else:  # nothing supplied
                  channel_info[vals[0]]["inner_coil"] = np.zeros(3)
                  channel_info[vals[0]]["outer_coil"] = np.zeros(3)
      return channel_info
  
file_path: mne-python/mne/io/artemis123/utils.py
imports: import os.path
  import numpy
  from ..._fiff._digitization import _artemis123_read_pos
  from ...transforms import rotation3d_align_z_axis
  from ...utils import logger
label_desc: Use image node_id 3 for calling a global function with example usage: _load_tristan_coil_locs(coil_loc_path) and returns: channel_info